Process of



a a boiling-temperature in the manufacture.

EEtEE@ HEINRICH F. D. SCLHVAHN, OF KANSAS CITY, MISSOURI.

PROCESS OF MAKlNG SOAP.

SPECIFICATION forming part of Letters Patent No. 396,343, dated January15, 1889.

Application filed March 9, 1888. Serial No. 266,734. (Specimens) To allwhom it may concern-.-

ingredients are-then thoroughly mixed and Be it known that I, llEIlZEiCHF.- 1).:

the temperature raised to about 180". A chem- SOHWAHN, of Kansas City,in ,the county of ical union is now perfected between the fat, Jacksonand Stateof lllissourhhave invented the alkali,.and the water. Therewill be a a certain new and useful ImprovedProcess l residue of the lye,which will sink to the botof Saponifying Fatty Substances, of which tomand carry with it any impurities which the following is a full, clear,and exact demay be in the mass, such impurities being, scription.

The invention consists in a process, herei takesplace. iuat'terdescribed, by which a pure soap may 1 ing. be made very quickly andwithout attaining i In place of the soap solution described an iequivalent quantity of soft soap may be used. I will first describe theprocess where pure i 1 claim as my invention fatsueh as tallow-is used:The described method of making soap, eonl l t The soap becomes hard oncool- One hundred pounds of tallow are melted at sisting of melting thefat, mixing therewith a temperature of about 120 Fahrenheit. To .the lyewhile at a temperature of about 120 this, after melting, are added fiftypounds of 1 Fahrenheit, mixing with this the described lye generallyknown as pure lye or caustic soap solution while at atemperature ofabout soda-having a strength of 45 Baum. The 150 Fahrenheit, and thenraising the temmassis then mixed until itbec-omesplastie, the I peratureto about 180, substantially as set temperature being maintained at about1:20 '1 forth. 1 aln-enheit. Then to the mass is added one HEINRICH RSCHWAHN iundred and twenty pounds of a soap solution made by dissolvingtwenty pounds of \Vit-nesses: hard soap in one hundred pounds of water IG. A. C. ROCHESTER, at a temperature of 150 Fahrenheit. The f FRED N.TUFTs.

ejected with the lye as the chemical union"

